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authorAndrey Konovalov <andreyknvl@google.com>2023-12-21 23:04:44 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-12-29 22:58:44 +0300
commit5cb6674b694b84803cbee8bfccaa2bfdfeb6eae4 (patch)
treee4c8689bb48440430df502dbb6032662ca57a33c /include/linux/mm.h
parent27232ba96cfbc6b9bdb363231c9c31305bb9a2bc (diff)
downloadlinux-5cb6674b694b84803cbee8bfccaa2bfdfeb6eae4.tar.xz
mm, kasan: use KASAN_TAG_KERNEL instead of 0xff
Use the KASAN_TAG_KERNEL marco instead of open-coding 0xff in the mm code. This macro is provided by include/linux/kasan-tags.h, which does not include any other headers, so it's safe to include it into mm.h without causing circular include dependencies. Link: https://lkml.kernel.org/r/71db9087b0aebb6c4dccbc609cc0cd50621533c7.1703188911.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index b72bf25a45cf..2563ffdb51bc 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1815,7 +1815,7 @@ static inline void vma_set_access_pid_bit(struct vm_area_struct *vma)
static inline u8 page_kasan_tag(const struct page *page)
{
- u8 tag = 0xff;
+ u8 tag = KASAN_TAG_KERNEL;
if (kasan_enabled()) {
tag = (page->flags >> KASAN_TAG_PGSHIFT) & KASAN_TAG_MASK;
@@ -1844,7 +1844,7 @@ static inline void page_kasan_tag_set(struct page *page, u8 tag)
static inline void page_kasan_tag_reset(struct page *page)
{
if (kasan_enabled())
- page_kasan_tag_set(page, 0xff);
+ page_kasan_tag_set(page, KASAN_TAG_KERNEL);
}
#else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */